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Impurities and reference standards

alpha-Artemether

Also known as (+)-alpha-Artemether, alpha-Dihydroartemisinin methyl ether, 3,12-Epoxy-12H-pyrano(4,3-j)-1,2-benzodioxepin, decahydro-10-methoxy-3,6,9-trimethyl-, (3R,5aS,6R,8aS,9R,10R,12R,12aR)-

CAS 71939-51-0Formula C16H26O5Molar mass 298.38 g/molEC 991-926-2
GHS signal word: Danger. Pictograms: Flammable, Harmful or irritant, Serious health hazard 4 suppliers listed
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alpha-Artemether chemical structure, C16H26O5, CAS 71939-51-0
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
71939-51-0
Formula
C16H26O5
Molar mass
298.38 g/mol
EC number
991-926-2
HS code
293299
Category
Impurities and reference standards

What is alpha-Artemether?

Plain description, key identifiers and synonyms

alpha-Artemether is a chemical substance with the molecular formula C16H26O5 and a molar mass of 298.38 g/mol. Its CAS registry number is 71939-51-0. The IUPAC name is (1R,4S,5R,8S,9R,10R,12R,13R)-10-methoxy-1,5,9-trimethyl-11,14,15,16-tetraoxatetracyclo[10.3.1.04,13.08,13]hexadecane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
(1R,4S,5R,8S,9R,10R,12R,13R)-10-methoxy-1,5,9-trimethyl-11,14,15,16-tetraoxatetracyclo[10.3.1.04,13.08,13]hexadecane
CAS number
71939-51-0
EC number
991-926-2
Molecular formula
C16H26O5
UNII
111W6L37CC
InChIKey
SXYIRMFQILZOAM-CNNNLJIRSA-N
InChI
InChI=1S/C16H26O5/c1-9-5-6-12-10(2)13(17-4)18-14-16(12)11(9)7-8-15(3,19-14)20-21-16/h9-14H,5-8H2,1-4H3/t9-,10-,11+,12+,13-,14-,15-,16-/m1/s1
Canonical SMILES
COC1OC2OC3(C)CCC4C(C)CCC(C1C)C24OO3
Isomeric SMILES
C[C@@H]1CC[C@H]2[C@H]([C@@H](O[C@H]3[C@@]24[C@H]1CC[C@](O3)(OO4)C)OC)C

Synonyms

  • (+)-alpha-Artemether
  • alpha-Dihydroartemisinin methyl ether
  • 3,12-Epoxy-12H-pyrano(4,3-j)-1,2-benzodioxepin, decahydro-10-methoxy-3,6,9-trimethyl-, (3R,5aS,6R,8aS,9R,10R,12R,12aR)-
  • (1R,4S,5R,8S,9R,10R,12R,13R)-10-methoxy-1,5,9-trimethyl-11,14,15,16-tetraoxatetracyclo[10.3.1.04,13.08,13]hexadecane
  • a-Artemether
  • (3R,5aS,6R,8aS,9R,10R,12R,12aR)-Decahydro-10-methoxy-3,6,9-trimethyl-3,12-epoxy-12H-pyrano[4,3-j]-1,2-benzodioxepin
  • SM 229
  • (1R,4S,5R,8S,9R,10R,12R,13R)-10-methoxy-1,5,9-trimethyl-11,14,15,16-tetraoxatetracyclo[10.3.1.0^{4,13}.0^{8,13}]hexadecane
  • (3R,5aS,6R,8aS,9R,10R,12R,12aR)-10-methoxy-3,6,9-trimethyldecahydro-3H-3,12-epoxy[1,2]dioxepino[4,3-i]isochromene
  • ?-Artemether
  • (+)-a-Artemether
  • Artemether impurity B
  • 3,12-Epoxy-12H-pyrano(4,3-j)-1,2-benzodioxepin, decahydro-10-methoxy-3,6,9-trimethyl-, (3alpha,5alphabeta,6beta,8alphabeta,9alpha,10beta,12beta,12aR*)-
  • (1R,4S,5R,8S,9R,10R,12R,13R)-10-methoxy-1,5,9-trimethyl-11,14,15,16-tetraoxatetracyclo[10.3.1.0?,??.0?,??]hexadecane

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
298.38 g/molcalc.
Exact mass
298.178 Dacalc.
LogP (octanol/water)
2.84calc.
Topological polar surface area
46.15 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
5calc.
Rotatable bonds
1calc.
Heavy atoms
21calc.
Rings
5calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
Formal charge
0calc.
Stereocentres
8calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, C1CC2CCOC3OC4CCC(C1)C23OO4

C1CC2CCOC3OC4CCC(C1)C23OO4

5 rings, 16 atoms.

62 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS02: Flammable
Flammable
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard

Hazard statements

  • H242Heating may cause a fire.
  • H302Harmful if swallowed.
  • H361fSuspected of damaging fertility.
Precautionary statements (18)
  • P203Obtain, read and follow all safety instructions before use.
  • P210Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
  • P234Keep only in original packaging.
  • P235Keep cool.
  • P240Ground and bond container and receiving equipment.
  • P264Wash skin thoroughly after handling.
  • P270Do not eat, drink or smoke when using this product.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P318If exposed or concerned, get medical advice.
  • P330Rinse mouth.
  • P370 + P378In case of fire: Use appropriate media to extinguish.
  • P403Store in a well-ventilated place.
  • P405Store locked up.
  • P410Protect from sunlight.
  • P411Store at temperatures not exceeding the specified limit.
  • P420Store separately.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

alpha-Artemether suppliers

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Where suppliers are based

4 suppliers in 3 countries

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alpha-Artemether price

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Uses and applications

What the substance is used for, by industry and function

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code alpha-Artemether is traded under.

HS 2932.99Indicative HS code

Heterocyclic compounds with oxygen hetero-atom(s) only, other

World exports in 2024
$3.81B
+10.3% vs 2023, imports $7.05B
2019 to 2024
Top exporters
  1. China28.9%
  2. Switzerland * partner reported12.7%
  3. Germany7.8%
Top importers
  1. United States49.7%
  2. China11.9%
  3. India * partner reported3.3%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for alpha-Artemether is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about alpha-Artemether, based on the data on this page

What is alpha-Artemether?

alpha-Artemether is a chemical substance with the molecular formula C16H26O5 and a molar mass of 298.38 g/mol. Its CAS registry number is 71939-51-0. The IUPAC name is (1R,4S,5R,8S,9R,10R,12R,13R)-10-methoxy-1,5,9-trimethyl-11,14,15,16-tetraoxatetracyclo[10.3.1.04,13.08,13]hexadecane.

What is the CAS number of alpha-Artemether?

The CAS registry number of alpha-Artemether is 71939-51-0.

What is the molecular formula and weight of alpha-Artemether?

The molecular formula of alpha-Artemether is C16H26O5 and its molar mass is 298.38 g/mol.

What is alpha-Artemether used for?

Known uses and roles of alpha-Artemether include initiators and catalysts in plastics and polymers and curing agents and crosslinkers in plastics and polymers.

Is alpha-Artemether hazardous?

alpha-Artemether carries the GHS signal word "Danger". Main hazards: heating may cause a fire, harmful if swallowed, suspected of damaging fertility. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of alpha-Artemether?

alpha-Artemether is usually classified under HS code 293299 (Heterocyclic compounds with oxygen hetero-atom(s) only, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy alpha-Artemether?

CompoundList lists 4 suppliers of alpha-Artemether in China, Czech Republic and United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

What is the price of alpha-Artemether?

Suppliers quote alpha-Artemether on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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